CN101509532A - Fluid-filled cylindrical vibration-damping device - Google Patents
Fluid-filled cylindrical vibration-damping device Download PDFInfo
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- CN101509532A CN101509532A CNA2009100076175A CN200910007617A CN101509532A CN 101509532 A CN101509532 A CN 101509532A CN A2009100076175 A CNA2009100076175 A CN A2009100076175A CN 200910007617 A CN200910007617 A CN 200910007617A CN 101509532 A CN101509532 A CN 101509532A
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- hole path
- fluid
- fluid chamber
- movable film
- low frequency
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/1427—Units of the bushing type, i.e. loaded predominantly radially characterised by features of flexible walls of equilibration chambers; decoupling or self-tuning means
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
A fluid filled cylindrical vibration damping device (10, 74) having a main rubber elastic body (16) elastically connecting an inner shaft member (12) and an intermediate cylindrical member (22), wherein base wall portions of either of a pair of pocket portions (30a, 30b) are constituted by the main rubber elastic body (16) to actively rise opposing positive/negative pressure fluctuations in a pair of fluid chambers (36a, 36b) at times of vibration input across the inner shaft member (12) and the outer cylindrical member (14); a low-frequency orifice passage (70, 94, 106) and a high-frequency orifice passage (72, 96, 108) are provided; and the high-frequency orifice passage (72, 96, 108) is provided in an aperture section thereof leading to at least one of the pair of fluid chambers (36a, 36b) with a moveable film (60, 92) adapted to limit fluid flow through the high-frequency orifice passage (72, 96, 108) on the basis of displacement and/or deformation thereof.
Description
Technical field
The present invention relates to be suitable for use as for example fluid filled type vibration damping device of the tubular design of automotive suspension lining (bushing).
Background technique
Vibration damping equipment has been placed between the parts that constitute the vibration transfer system, the vibration damping that is used between the parts links.The vibration damping equipment that a kind of known tubular designs comprises interior shaft component, centers on the outer barrel member of interior shaft component layout and the primary elastomeric elastomer that interior shaft component and outer barrel member are linked mutually.In addition, utilization is well-known based on the fluid-filled cylindrical vibration-damping device of the effectiveness in vibration suppression that flows of filling inner fluid, and has been applied to for example automotive suspension lining.
A requirement of such fluid-filled cylindrical vibration-damping device is that this device has been given play to the effective effectiveness in vibration suppression of vibration to each frequency range in different a plurality of frequency ranges.Yet, conventional apparatus runs into following problem: be tuned to the low frequency hole path (orifice passage) of vibration of low-frequency range and the mobilization that flows through the fluid of low frequency hole path based on being directed in setting and guarantee under the situation of gratifying effectiveness in vibration suppression, because the anti-resonance of low frequency hole passage portion, may reduce to contrast the damping property of the vibration of the high frequency range of the frequency range of low frequency hole path significantly.
In order to tackle this problem, proposed to be provided with various structures as lower member: short-channel, it is arranged to parallel with the hole path; And elastic element, it is arranged to interdict short-channel, makes the elastic element formation be suitable for switching off-load (relief) device of this short-channel between open mode and blocking state.The example of this design comprises: U.S. Patent No. 6,168, the sealing lip of putting down in writing among Fig. 3 of 144B1 (12,12 '); And the rubber lip sheet of putting down in writing among Fig. 3 of Japanese kokai publication hei 01-255736 communique 9.
Yet the relief arrangement of these conventional constructions is designed such that all elastic element based on the relative pressure difference between two liquid chambers resiliently deformable takes place, thereby short-channel is placed open mode.For this reason, in practice, action is unsettled, thereby is difficult to stably to realize the damping property of expecting.Particularly under the situation that elastic element is made by elastic rubbery body, because as factors such as moulding contraction cause being difficult to guaranteeing good dimensional accuracy in the molding process and the variation to the contact force of the wall of short-channel that produces in the undergauge processing of the outer sleeve that joins the elastomeric outer circumferential face of primary elastomeric to of curing, confirmed that doing the time spent when the pressure of expection level will be difficult to obtain the relief arrangement that moves with reliable fashion.
Though can expect making in advance the wall of elastic element and short-channel to be easier to separate, make the pressure of working as the expection level make short-channel be in open mode reliably as the time spent.This configuration produces following problem: even under low-down stress level, resiliently deformable also will take place in elastic element, make short-channel open.This makes and to be difficult to guarantee that the fluid of capacity flows through low frequency hole path, makes the damping property of vibration of low-frequency range that low frequency hole path has been tuned to reduce.
Summary of the invention
Therefore, an object of the present invention is to provide a kind of fluid-filled cylindrical vibration-damping device of innovative construction, this vibration damping equipment is suitable for based on the sufficient damping property of guaranteeing the vibration in the low-frequency range by the fluid flow function of the low frequency hole path between two liquid chambers; Simultaneously, when the vibration of the upper frequency side of the tuned frequency of input low frequency hole path, can avoid forming of the very high dynamic spring constant that causes by the anti-resonance effect of low frequency hole path, thereby improved damping property is provided.
Can obtain above-mentioned and/or optional purpose of the present invention according at least one aspect in the following aspect of the present invention.Can adopt following aspect and/or be used in element in the each side of the present invention with any possible independent assortment.Should be appreciated that, principle of the present invention is not limited to the combination of these aspects of the present invention and technical characteristics, but can confirm based on disclosed teaching of the present invention in whole specification and accompanying drawing in addition, perhaps can confirm in view of full content of the present disclosure by those skilled in the art.
Particularly, the invention provides a kind of fluid-filled cylindrical vibration-damping device, it comprises: intermediate cylinder member, its outer circumferential side around interior shaft component are arranged, by the primary elastomeric elastomer intermediate cylinder member and interior shaft component are linked; A pair of bag shape portion, the radially both sides that it is arranged at the primary elastomeric elastomer and is positioned at shaft component, and respectively by being arranged on window portion in the intermediate cylinder member at the outer circumferential face opening; Outer barrel member, its overcoat also is fixed on the intermediate cylinder member and covers this to bag shape portion, thereby limits a fluid chamber of filling with incompressible fluid; And pole, its be arranged to along the inner peripheral surface of outer barrel member extend in a circumferential direction and be formed on pole and outside the hole path that along the circumferential direction extends between the barrel member, this fluid-filled cylindrical vibration-damping device is characterised in that: constitute this bottom wall portion to the either party in the bag shape portion by the primary elastomeric elastomer, make shaft component in pass with the direction of axis normal and outside during the barrel member inputted vibration, in this fluid chamber, produce energetically opposite just/negative pressure changes; The hole path comprises the low frequency hole path that is tuned to low-frequency range and is tuned to the high frequency hole path of high-frequency range; Be provided with movable film in the either party of high frequency hole path in leading to this fluid chamber the open part, this movable film is suitable for coming the fluid of restricted passage high frequency hole path to flow based on its displacement and/or distortion.
In fluid-filled cylindrical vibration-damping device constructed according to the invention, during the input low-frequency vibration, based on the excellent effectiveness in vibration suppression of generation such as resonance effect of being induced the fluid that between this fluid chamber, flows by low frequency hole path.
In addition, be positioned in input during the vibration of radio frequency head of tuned frequency of low frequency hole path, block low frequency hole path basically by the anti-resonance effect of low frequency hole path; And micro-strain and/or micro-displacement based on the movable film in the open part that leads at least one side in this fluid chamber that is arranged in the path of high frequency hole produce by the fluid of high frequency hole path mobile between two fluid chamber.Especially, during the axis inputted vibration of and direction axis normal consistent with the opposite direction of this fluid chamber, this fluid chamber will produce reciprocal positive/negative pressure change energetically.Therefore, the work of the relative pressure by both sides produces movable film in order to good responsiveness and efficient micro-strain, as a result, the resonance effect of the fluid that can produce the enough levels by the high frequency hole path very effectively part that flows and this fluid is flowed.In addition, based on the damping property of realizations such as the mobile resonance effect of fluid to the excellence of dither.
That is to say, the invention provides a kind of structure of novelty, wherein, what combination was adopted is: a fluid chamber, and it produces reciprocal positive/negative pressure change energetically; Low frequency and high frequency hole path; And movable film, it is arranged on the open part of high frequency hole path.Utilize this configuration, the two all acts on the both sides of movable film the hydrodynamic pressure that produces in this fluid chamber.That is to say that the conventional apparatus that will act on a side of movable film with hydrodynamic pressure is compared, the bigger external force or the pressure that are enough to movable film fully is out of shape will make and for example can adopt the movable film with bigger spring constant from double side acting on movable film.Thereby the present invention can eliminate or reduce following traditional problem: because the size of movable film is different or other characteristic difference causes damping behavior to become unstable.In other words, novel structure of the present invention will be guaranteed fully big fluid pressure action on movable film, feasible some difference that can compensate the characteristic of movable film.Thereby, do not needing characteristic, quality, size etc. to carry out under the situation of high complicated control to movable film, this fluid-filled cylindrical vibration-damping device will obtain stable effectiveness in vibration suppression based on this movable film.
In aspect fluid-filled cylindrical vibration-damping device constructed according to the invention preferred, arrange movable film in each the open part that leads to this fluid chamber from high frequency hole path.
Lead to movable film in the open part of this fluid chamber each by providing to be arranged in, when the input low-frequency vibration, can more effectively limit pressure and between fluid chamber, leak by high frequency hole path from high frequency hole path.In addition, by deformation characteristic and the placement property of regulating movable film respectively, can in damping behavior tuning, realize improved degrees of freedom.For example, can regulate the deformation characteristic and the placement property of movable film by constituent material, shape, size or the supporting structure of suitably selecting movable film.
In other words, this aspect provides another particular structure, wherein, is connected a fluid chamber that produces reciprocal positive/negative pressure change with high frequency hole path by low frequency, and movable film is arranged on two open parts that the high frequency hole is routed to fluid chamber.In the fluid mass that flows through the high frequency hole path that comprises a fluid chamber, realize symmetry.Because this symmetry flows similar generation along the fluid of both direction by high frequency hole path.Thereby the effectiveness in vibration suppression of the fluid-filled cylindrical vibration-damping device of this aspect is non-directional.
In addition, on the hydrodynamic pressure in this fluid chamber will act on and flow via the movable film at place, the two end part of the high frequency hole path fluid by high frequency hole path.The tuning effectively fluid by high frequency hole path is flowed in this configuration, and flowing based on the fluid that passes through high frequency hole path produces stable and effective effectiveness in vibration suppression.
Fluid-filled cylindrical vibration-damping device constructed according to the invention on the other hand in, the integrated vulcanizing profiled part that by the primary elastomeric elastomer interior shaft component and intermediate cylinder member is linked together and form is provided with the pair of holes halfbody, this has the semicircular cylinder shape respectively and assembles this to the hole halfbody from these both sides to the opposed longitudinal axis of bag shape portion the hole halfbody, make this link this opening, thereby limit the pole of the drum that extends in a circumferential direction along the inner peripheral surface of outer barrel member bag shape portion to the hole halfbody; Cover on the outer circumferential face that is arranged on pole and the groove that along the circumferential direction extends by outer barrel member, to limit low frequency hole path and high frequency hole path.
This hole halfbody by assembling semicircular cylinder shape is to limit the pole of drum, and form low frequency hole path and high frequency hole path so that its outer periphery along pole are extended, can under the situation that does not increase device size, guarantee the hole path of sufficient length effectively.Therefore, the design freedom and the tuning degrees of freedom of hole path can be improved, and the high performance fluid-filled cylindrical vibration-damping device of the damping behavior that acquisition requires can be realized with the design of compactness.
Fluid-filled cylindrical vibration-damping device constructed according to the invention on the other hand in, the length direction first end of low frequency hole path in this fluid chamber side's split shed and be communicated with this side in this fluid chamber, and length direction the other end of low frequency hole path in this fluid chamber the opposing party's split shed and be communicated with this opposing party in this fluid chamber; Length direction intermediate portion at low frequency hole path is formed with first middle opening portion of the side's split shed in this fluid chamber and the second middle opening portion of the opposing party's split shed in this fluid chamber, and in the first middle opening portion and the second middle opening portion, arrange movable film respectively, thereby utilize the area limiting high frequency hole path that extends between the first middle opening portion in the intermediate portion of low frequency hole path and the second middle opening portion.
Utilize this configuration, the opening portion of low frequency hole path and high frequency hole path will independently form, and can make the design freedom of low frequency hole path and high frequency hole path higher.Therefore, can according to as the frequency of the problematic vibration of vibration damping object with hair-breadth tuning hole path, and can obtain the damping property expected effectively.Especially,, utilize the length direction intermediate portion of low frequency hole path, can form high frequency hole path by flow channel with low frequency hole path sharing according to this aspect; And movable film can be arranged in two open parts that lead to this fluid chamber of high frequency hole path.
In aspect fluid-filled cylindrical vibration-damping device constructed according to the invention another, the length direction first end of low frequency hole path in this fluid chamber side's split shed and be communicated with this side in this fluid chamber, and length direction the other end of low frequency hole path in this fluid chamber the opposing party's split shed and be communicated with this opposing party in this fluid chamber; Be formed with the middle opening portion of the side's split shed in this fluid chamber at the length direction intermediate portion of low frequency hole path, and in described middle opening portion, arrange movable film, thereby utilize the part of low frequency hole path to limit high frequency hole path.
Utilize this configuration, can sharedly lead to the opening of the side the fluid chamber, thereby can realize fluid-filled cylindrical vibration-damping device constructed according to the invention with better simply structure from low frequency hole path and high frequency hole path.In addition, by setting the aperture position of middle opening portion in the appropriate location of the length direction of low frequency hole path, can be with enough precision tuned high frequency hole paths, make to obtain the damping property expected effectively.
Description of drawings
To the explanation of preferred implementation, above-mentioned and/or other purpose feature and advantage of the present invention will become more obvious from reference to the accompanying drawings, and in the accompanying drawings, identical reference character is represented components identical, wherein:
Fig. 1 is the axial sectional view or the longitudinal section along the line 1-1 of Fig. 2 intercepting of fluid-filled cylindrical vibration-damping device of the suspension lining form of first embodiment of the invention;
Fig. 2 is the sectional view along the line 2-2 intercepting of Fig. 1;
Fig. 3 is the axial sectional view or the longitudinal section of outer barrel member of the suspension lining of Fig. 1;
Fig. 4 is the plan view of pole of the suspension lining of Fig. 1;
Fig. 5 is the side view of the pole of Fig. 4;
Fig. 6 is the rear view of the pole of Fig. 4;
Fig. 7 is the sectional view along the line 7-7 intercepting of Fig. 4;
Fig. 8 is the sectional view along the line 8-8 intercepting of Fig. 7;
Fig. 9 is the plan view of movable rubber membrane of the suspension lining of Fig. 1;
Figure 10 is the sectional view along the line 10-10 intercepting of Fig. 9;
Figure 11 is axial sectional view or the longitudinal section that the line 11-11 along Figure 12 of suspension lining second embodiment of the invention intercepts;
Figure 12 is the sectional view along the line 12-12 intercepting of Figure 11;
Figure 13 is the plan view of pole of the suspension lining of Figure 11;
Figure 14 is the plan view according to the pole that is used for the suspension lining of the 3rd mode of execution of the present invention;
Figure 15 is the figure that the damping behavior of fluid-filled cylindrical vibration-damping device of the present invention is shown.
Embodiment
Fig. 1 and Fig. 2 illustrate the suspension lining 10 of first mode of execution of fluid-filled cylindrical vibration-damping device constructed according to the invention.Suspension lining 10 has the structure that is linked metal interior shaft component 12 and metal outer barrel member 14 by primary elastomeric elastomer 16 elasticity.Then, interior shaft component 12 is installed on the vehicle body (not shown), and outer barrel member 14 is installed to suspension arm (not shown) as the parts that are positioned at wheel side, thus vibration damping equipment is placed between vehicle body and the suspension arm, link with the mutual vibration damping that vehicle body and suspension arm are provided.
More specifically, the interior shaft component 12 integral body general cylindrical shape shape that is minor diameters.In the present embodiment, interior shaft component 12 is the high rigid members that form by as metallic material such as iron or aluminum alloys.In the present embodiment, the axial intermediate portion of interior shaft component 12 limits the diameter wide diameter portion 18 bigger than the diameter of axial two end portions.The upper axial end portion of interior shaft component 12 constitutes the lip part 20 that expands outwardly along the direction with axis normal.
Outer circumferential side at interior shaft component 12 is arranged intermediate cylinder member 22.This intermediate cylinder member 22 is thin-walled and diameter general cylindrical shape shapes bigger than the diameter of interior shaft component 12.Intermediate cylinder member 22 and interior shaft component 12 are similar, are the high rigid members that is formed by metallic material.The a pair of window 24a of portion, 24b are formed on the axial intermediate portion of intermediate cylinder member 22, make an axis that makes progress along the footpath dispose relatively.The 24a of window portion, 24b radially connect intermediate cylinder member 22 and have the extended length of not enough half cycle.Along the circumferential direction form a pair of slot part 26,26 between a pair of window 24a of portion, the 24b in intermediate cylinder member 22.Slot part 26 is in the axial intermediate portion of intermediate cylinder member 22 groove shape in the outer circumferential face upper shed, and along the circumferential direction extends and its end is communicated with the 24a of window portion, 24b with this respectively.
Make the outer circumferential face of the inner peripheral surface of primary elastomeric elastomer 16 and interior shaft component 12 and put (juxtapose) and the sulfuration of the inner peripheral surface of primary elastomeric elastomer 16 join in the outer circumferential face of shaft component 12 and the outer circumferential face that makes primary elastomeric elastomer 16 and intermediate cylinder member 22 inner peripheral surface and put and inner peripheral surface ground that the outer circumferential face sulfuration of primary elastomeric elastomer 16 joins intermediate cylinder member 22 to disposes primary elastomeric body 16.Thereby make the elasticity binding each other of interior shaft component 12 and intermediate cylinder member 22 by primary elastomeric elastomer 16.In the present embodiment, primary elastomeric elastomer 16 takes to possess the form of the integrated vulcanizing profiled part 28 of interior shaft component 12 and intermediate cylinder member 22.In addition, in the present embodiment, after primary elastomeric elastomer 16 sulfidization moldings, middle barrel member 22 is carried out as undergauge processing such as 360 degree radial compression, primary elastomeric elastomer 16 being applied precompression radially, thereby reduce to act on the level of the tensile stress (tensile stress) on the primary elastomeric elastomer 16.By rubber layer whole the cover internal surface that be formed on slot part 26 intermediate cylinder member 22 on integrally formed with primary elastomeric elastomer 16.
In primary elastomeric elastomer 16, an axis that makes progress along the footpath forms a pair of bag shape 30a of portion, 30b in the both sides of interior shaft component 12.This bag shape 30a of portion, 30b are at the axial intermediate portion of primary elastomeric elastomer 16 concave shape in the outer circumferential face upper shed, and the extended length that has not enough half cycle as shown in Figure 2, and size is corresponding with the size of the 24a of window portion, 24b in being formed on intermediate cylinder member 22.Aim at the opening of the bag shape 30a of portion, 30b and the 24a of window portion, 24b, make the bag shape 30a of portion, 30b be communicated with the outer circumferential side of intermediate cylinder member 22 by the 24a of window portion, 24b.
As depicted in figs. 1 and 2, from the outside outer barrel member 14 is set on the integrated vulcanizing profiled part 28 of primary elastomeric elastomer 16 regularly.Outer barrel member 14 is the large diameter general cylindrical shape shapes of thin-walled, and is set to the rigid member that forms by as metallic material such as iron or aluminum alloys.
Cover the whole basically surface of the inner peripheral surface of outer barrel member 14 by caulking gum layer 32.Caulking gum layer 32 is the thin elastomers that coat the inner peripheral surface of outer barrel member 14.As shown in Figure 3, towards interior week side-prominent sealing ribs 34 be formed on the caulking gum layer 32.Sealing ribs 34 along the circumferential direction extends continuously around whole circumference.In the present embodiment, predetermined distance ground, interval forms a plurality of sealing ribs 34 in the axial direction.The part that sealing ribs 34 in the present embodiment is formed from being oriented to contact with the pole of discussing after a while 38 with intermediate cylinder member 22 is outstanding.
The outer barrel member 14 that to construct from the outside is set on the integrated vulcanizing profiled part 28 of primary elastomeric elastomer 16 regularly.Particularly, make the outer barrel member 14 that coats inner peripheral surface by caulking gum layer 32 slide into the outside of the intermediate cylinder member 22 that constitutes integrated vulcanizing profiled part 28; Then, externally barrel member 14 carries out as undergauge processing such as 360 degree radial compression, so that outer barrel member 14 is fixed to the outer circumferential face of intermediate cylinder member 22 in intimate contact across the caulking gum layer 32 and the outer circumferential face of intermediate cylinder member 22.
By outer barrel member 14 is installed on the integrated vulcanizing profiled part 28, be formed on a pair of window 24a of portion in the intermediate cylinder member 22, the opening of 24b by outer barrel member 14 coverings.Thereby by the bag shape 30a of portion of the 24a of window portion, 24b opening, the opening of 30b, form a fluid chamber 36a, 36b to utilize the bag shape 30a of portion, 30b by outer barrel member 14 blockings.By with the juxtaposed outer barrel member 14 in intermediate cylinder member 22 fluid-tight ground from the 36a of outside seal fluid chamber, 36b; And in the 36a of fluid chamber, 36b, enclose incompressible fluid.Both sides at interior shaft component 12 form the axis 36a of fluid chamber respect to one another, the 36b that makes progress along the footpath consistent with the principal oscillation input direction.As shown in Figure 2, by separating this fluid chamber 36a, 36b along axial intermediate portion with the primary elastomeric elastomer 16 that radially extends of the opposite direction approximate vertical of the 36a of fluid chamber, 36b.
The incompressible fluid of fill fluid chamber 36a, 36b is not particularly limited; Can advantageously adopt the mixture of water, aklylene glycol, polyglycols, silicone oil or these materials.Realizing especially preferably using the following low viscous flow body of 0.1Pas as the fluid of enclosing aspect the vibration damping effectively based on the mobilization of fluid (discussing after a while).For example, can simultaneously these parts be immersed in the inclosure of finishing the incompressible fluid in the 36a of fluid chamber, the 36b in the incompressible fluid by carrying out the integrated vulcanizing profiled part 28 that outer barrel member 14 is assembled into primary elastomeric elastomer 16.
To shown in Figure 8, halfbody 40 integral body in hole are semicircular cylinder shapes of thick-wall and large-diameter as Fig. 4, and by forming as metallic material such as iron or aluminum alloy or by the hard resin material.Preferably come manufacturing hole halfbody 40 by the die casting (die casting) of iron or aluminum alloy or the injection moulding of synthetic resin.
On the outer periphery of hole halfbody 40, be formed with first groove 42 and second groove 44 as the groove that extends at outer circumferential face upper edge circumferencial direction; These grooves are predetermined distance ground formation at interval in the axial direction.The length that the overall circumference of first groove, 42 ratio of elongation hole halfbodies 40 is short slightly, first groove 42 is communicated with via the inside all sides near the intercommunicating pore 46 the circumferencial direction end of through hole halfbody 40 and the footpath of hole halfbody 40 in the one end, and the other end of first groove 42 is in the end face upper shed of the circumferencial direction of hole halfbody 40.Second groove 44 extends along the overall circumference of hole halfbody 40, and its two end part are in the end face upper shed of the circumferencial direction separately of hole halfbody 40.End at second groove 44 forms plane of inclination 48, and this end of second groove 44 is along with tilting towards first groove 42 gradually towards the circumferencial direction outside.
The circumferencial direction middle body of hole halfbody 40 limits radially inwardly outstanding heavy section 50.By forming this heavy section 50, the circumferencial direction middle body of hole halfbody 40 along with the direction of axis normal towards circumferencial direction center side thickening gradually.The face of interior all sides of heavy section 50 is plane shape on the whole, and the middle body of the width direction of this face of interior all sides (circumferencial direction) is the flexure plane along the circumferencial direction bending of hole halfbody 40.
As Fig. 4 and shown in Figure 8, opening portion 58 is formed in the wall of interior all sides of second groove 44.Opening portion 58 is the avette holes that radially connect the inner circle wall of second groove 44, and radially first end is communicated with the length direction middle body of second groove 44, the other end the diapire upper shed of accommodating recess 54 with accommodate recess 54 and be communicated with.
To be installed in the hole halfbody 40 of above-mentioned structure as Fig. 9 and movable film 60 shown in Figure 10.Movable film 60 is formed by the rubber elastomer of the shape roughly circular plate shape corresponding with the shape of accommodating recess 54.Be formed on the outer periphery of movable film 60 to two of thickness direction side-prominent annular support parts 62.Sealing lip 64 is integrally formed along the whole circumference of the radially middle body of annular support part 62, and two side-prominent to thickness direction.In the present embodiment, movable film 60 has in addition towards the center the radially middle body of attenuation gradually.Thereby two faces of the radially middle body of movable film 60 are defined as the plane of inclination of taper.
The movable film 60 of present embodiment has three narrow grooves 66 that are formed on wherein.Narrow groove 66 is sidelong to periphery from radial center and is penetrated the extension of shape ground, and the part of the narrow groove 66 of formation of movable film 60 is thinner than other parts.As shown in Figure 9, in the present embodiment, three narrow grooves 66 are formed among each side in two faces of movable film 60, and as shown in figure 10, and the narrow groove 66 on two faces is formed on the position to correspond to each other.In the present embodiment, along the circumferential direction the narrow groove 66 of disposed adjacent spaced apart with being formed in the circumferencial direction equal intervals.
By form these narrow grooves 66 and make movable film 60 in the central the part part thinner, the middle body that makes movable film 60 is easier to take place resiliently deformable.Damping behavior is as requested suitably set the elasticity of movable film 60, and can wait the elasticity of regulating movable film 60 by quantity, length, the width of suitably regulating narrow groove 66.
Then, movable film 60 is assembled to is formed on accommodating in the recess 54 in the hole halfbody 40, movable film 60 is being assembled under the state of accommodating in the recess 54, the fixed block 68 of ring-type is press fit in the pressure assembling recess 52.Thereby, be formed on annular support part 62 on the outer periphery of movable film 60 and be sandwiched in fixed block 68 and accommodate between the diapire face of recess 54, make and allow under the state of the middle body resiliently deformable of movable film 60 movable film 60 is installed in the hole halfbody 40.In the present embodiment, form distortion at the outer circumferential side of accommodating recess 54 and allow recess 56, with the resiliently deformable of the radially middle body of allowing movable film 60 effectively.
Under the state that movable film 60 is installed in the hole halfbody 40, movable film 60 is oriented to cover the opening of fluid chamber's 36 sides of the opening portion 58 that is formed in the hole halfbody 40.Especially, because sealing lip 64 is formed on the annular support part 62 and sealing lip 64 is sandwiched in and accommodates between recess 54 and the fixed block 68, movable film 60 will be configured to the opening that recess 56 is allowed in distortion that fluid-tight ground covers the opening of the interior all sides that comprise opening portion 58.
As depicted in figs. 1 and 2, the hole halfbody 40 that movable film 60 has been installed in the above described manner is installed on the integrated vulcanizing profiled part 28 of primary elastomeric elastomer 16.Particularly, as shown in Figure 2, from a pair of bag shape 30a of portion, both sides radially that 30b is relative pair of holes halfbody 40a, 40b are assembled on the integrated vulcanizing profiled part 28, two ends of the circumferencial direction of hole halfbody 40a, 40b are assembled in a pair of slot part 26,26, and make the circumferencial direction intermediate portion of hole halfbody 40a, 40b be oriented to along the circumferential direction stride across the bag shape 30a of portion that is formed in the primary elastomeric elastomer 16, the opening ground extension of 30b.Thereby, be equipped with hole halfbody 40a, the 40b of the assembling of movable film 60 to produce the whole pole 38 of general cylindrical shape shape that is.
In addition, pair of holes halfbody 40a, 40b relative to each other are installed along the vertical direction turningly, and make that the plane of inclination 48 of each hole halfbody 40a, 40b is connected to each other at the circumferencial direction first end when being installed in hole halfbody 40a, 40b in the integrated vulcanizing profiled part 28.Thereby, in the pole 38 that constitutes by pair of holes halfbody 40a, 40b, the groove 42,44 of hole halfbody 40a will be connected in series with the groove 42,44 of hole halfbody 40b, and along the circumferential direction extends the length in two weeks of less than around the outer periphery of pole 38 with continuous helical structure.In the present embodiment, in the halfbody 40a of hole, first groove 42 is formed the downside that is arranged in Fig. 1, and in the halfbody 40b of hole, first groove 42 is formed the upside that is arranged in Fig. 1.
By with 14 assemblings of outer barrel member and be fixed to the integrated vulcanizing profiled part 28 of the pole 38 that comprises installation, the outer circumferential face of pole 38 will across the inner peripheral surface fluid-tight of caulking gum layer 32 and outer barrel member 14 and put.Thereby, cover the opening of the outer circumferential side that is formed on the groove 42,44 in the pole 38 by outer barrel member 14 fluid-tight ground, and will utilize groove 42,44 to constitute low frequency hole path 70.Low frequency hole path 70 is around the tunnel-like path of circumference with the helical structure extension of the length in two weeks of less than, low frequency hole path 70 is communicated with the 36a of fluid chamber at the intercommunicating pore 46 of first end by hole halfbody 40a, and the intercommunicating pore 46 by hole halfbody 40b is communicated with the 36b of fluid chamber in the other end, makes two 36a of fluid chamber, 36b communicate with each other by low frequency hole path 70.Regulate the path-length ratio long-pending with passage sections of low frequency hole path 70 by the wall spring rate (spring rigidity) of considering the 36a of fluid chamber, 36b, path will be tuned to based on the mobilization generation of fluid the effectiveness in vibration suppression as the vibration of the low-frequency range of vibration damping object.
Here, the opening portion 58,58 of the wall of the interior all sides of perforation is formed on the intermediate portion of the length direction of low frequency hole path 70; And the intermediate portion of the length direction of low frequency hole path 70 is communicated with the 36a of fluid chamber, 36b by opening portion 58,58.Utilization is formed on the opening portion 58,58 among each hole halfbody 40a, 40b and the part between these opening portions 58,58 of low frequency hole path 70, and it is shorter and make a fluid chamber 36a, the interconnective high frequency of 36b hole path 72 than the path-length of low frequency hole path 70 to constitute path-length.The long-pending passage sections that is substantially equal to low frequency hole path 70 of the passage sections of high frequency hole path 72 is amassed, and path-length is lacked than the path-length of low frequency hole path 70 and be about as much as half cycle; High frequency hole path 72 is tuned to the effectiveness in vibration suppression based on the vibration of the high frequency range of the frequency range of the resonance effect performance contrast low frequency hole path 70 of fluid.
In the present embodiment, movable film 60 be positioned in respectively lead to a fluid chamber 36a, 36b from high frequency hole path 72 open part (in other words, be positioned in the two end part of high frequency hole path 72 respectively), and the feasible opening portion 58 that covers each hole halfbody 40 by movable film 60.By this configuration, during the input low-frequency vibration, be restricted by the fluid of high frequency hole path 72 is mobile in fact, and during tremendously high frequency vibrates in input, the resiliently deformable that caused by the relative pressure oscillation of the 36a of fluid chamber, 36b will take place in movable film 60, make the 36a of fluid chamber, 36b pass through high frequency hole path 72 and be communicated with in fact.In the present embodiment, constitute the first middle opening portion and the second middle opening portion by the opening portion 58,58 that is formed among pair of holes halfbody 40a, the 40b.
Be installed under the state of vehicle at the suspension lining 10 that will construct as mentioned above, in thereby shaft component 12 in pass with the direction of axis normal and outer barrel member 14 inputted vibrations make shaft component 12 with outside barrel member 14 with the direction of axis normal on during the generation relative displacement, between a fluid chamber 36a, 36b, will produce relative pressure oscillation.Especially, along opposite direction (consistent) inputted vibration of this fluid chamber 36a, 36b the time, in this fluid chamber 36a, 36b, will produce reciprocal positive pressure change and negative pressure change energetically with the principal oscillation input direction.
If inputted vibration is the vibration in the low-frequency range,, between two chamber 36a, 36b, produces fluid by low frequency hole path 70 and flow then based on the relative pressure difference that produces between a fluid chamber 36a, the 36b.Thereby,,, will produce effectiveness in vibration suppression (high effectiveness in vibration suppression) as the resonance effect based on the mobilization of the fluid that flows through low frequency hole path 70.
In addition, under the situation of the vibration of importing low-frequency range, the elastic deformation amount of movable film 60 will be restricted, and high frequency hole path 72 will be maintained at the state of blocking basically.Thereby, can guarantee effectively to flow, and the effectiveness in vibration suppression that provides by low frequency hole path 70 can advantageously be provided by low frequency hole path 70 sufficient fluid between two 36a of fluid chamber, 36b.During the vibration of the frequency range that is tuned to when input low frequency hole path 70, low frequency hole path 70 will be in resonance state, and fluid flow resistance will descend significantly.Thereby, the fluid that produces energetically by low frequency hole path 70 is flowed, and will prevent to flow by the fluid of high frequency hole path 72.
Especially, in the present embodiment, movable film 60 is installed in the opening at the place, two end part of high frequency hole path 72, when the vibration of input in the low-frequency range, can more effectively prevent the reduction of the relative pressure oscillation between the 36a of fluid chamber, the 36b that causes because the fluid of the essence by high frequency hole path 72 flows.As a result, can guarantee that the fluid of the abundance by low frequency hole path 70 flows, can more effectively bring into play effectiveness in vibration suppression by low frequency hole path 70.
Be under the situation of vibration of the frequency range higher at inputted vibration than the tuned frequency of low frequency hole path 70, the resiliently deformable relevant with the relative pressure oscillation of the 36a of fluid chamber, 36b will take place in movable film 60, thereby high frequency hole path 72 will be in and allow fluid to flow through wherein the state of opening basically, and it is mobile to produce the fluid of the essence by high frequency hole path 72 between the 36a of fluid chamber, 36b.Therefore, will produce the effectiveness in vibration suppression (low dynamic Spring effect) of expection based on the mobilization of the fluid that flows through high frequency hole path 72.When the input dither, will be basically by anti-resonance effect blocking low frequency hole path 70.
Especially, when the wall that is limited two each sides among the 36a of fluid chamber, the 36b by primary elastomeric elastomer 16 a part of, two 36a of fluid chamber, 36b are as producing the pressure receiving chamber of internal pressure change based on the resiliently deformable of primary elastomeric elastomer 16 when the vibration input.In addition, this fluid chamber 36a, 36b be formed on primary elastomeric elastomer 16 both sides and on the principal oscillation input direction toward each other.Therefore, along the opposite direction of this fluid chamber 36a, 36b, when being principal oscillation input direction inputted vibration, in this fluid chamber 36a, 36b, will produce reciprocal positive pressure change and negative pressure change energetically.Therefore, the relative pressure difference between this fluid chamber 36a, the 36b will act on the movable film 60, and will effectively and stably produce the micro-strain of movable film 60.As a result, the fluid that produces effectively by high frequency hole path 72 is flowed, will obtain effectiveness in vibration suppression the excellence of the inputted vibration in the high-frequency range based on the mobilization of fluid.
Then, Figure 11 and Figure 12 illustrate the automotive suspension lining 74 according to second mode of execution of fluid-filled cylindrical vibration-damping device of the present invention.In the following description, with identical reference character represent with above-mentioned first mode of execution in parts parts and the part part identical with part, and no longer describe these parts and part in detail.
Suspension lining 74 has following structure: pole 76 is installed on the integrated vulcanizing profiled part 28 of the substantially the same primary elastomeric elastomer 16 of the structure of the parts in structure and above-mentioned first mode of execution.To shown in Figure 13, pole 76 is whole to be semicircular cylinder shape roughly as Figure 11, and comprises by as metal hole parts 77 such as iron or aluminum alloys.
As shown in figure 13, on the outer periphery of hole part 77, be formed with: first groove 78, it is along the circumferential direction to extend the groove that is shorter than complete cycle length slightly; And second groove 80, it is the groove that along the circumferential direction extends complete cycle length continuously, these grooves are formed in the axial direction predetermined distance at interval.First groove 78 and second groove 80 have roughly the same length, but the degree of depth of first groove 78 and width are littler than the degree of depth and the width of second groove 80.
Form the intercommunicating pore 82 of the diapire (wall of interior all sides) that radially connects first groove 78 at the circumferencial direction first end of first groove 78; This first end of first groove 78 is communicated with interior all sides of hole part 77 by intercommunicating pore 82, and the other end of first groove 78 is in the circumferencial direction end face upper shed of hole part 77.
As Figure 11 and shown in Figure 12, inwardly all side-prominent accommodation sections 86 are formed on the circumferencial direction middle body of hole part 77.This accommodation section 86 is formed on the same axial component that also is provided with second groove 80 of hole part 77.Be formed on the circumferencial direction middle body of accommodation section 86 towards the press fit recess 88 of inner peripheral surface opening.Be formed with at the middle body of press fit recess 88 and accommodate recess 90 in the diapire upper shed of press fit recess 88.Accommodating recess 90 is circular depressions that diapire is connected by opening portion 84.
The pole 76 that forms in the above described manner is installed on the integrated vulcanizing profiled part 28 and strides across bag opening of the 30a of shape portion, and make two ends of circumferencial direction be assembled in a pair of slot part 26,26.Under the state of mounting hole member 76, fixedly be set on the integrated vulcanizing profiled part 28 from the outside with outer barrel member 14, thereby finish the suspension lining 74 of constructing according to present embodiment.
In this suspension lining 74, cover the peripheral openings of first groove 78 by outer barrel member 14, thereby form around the length of the not enough half cycle of circumferential extension and make the interconnective low frequency of the 36a of fluid chamber, 36b hole path 94.In addition, cover the peripheral openings of second groove 80, thereby form the high frequency hole path 96 that extends the length that approximates quadrant greatly from the circumferencial direction middle body to the circumferencial direction both sides by outer barrel member 14.High frequency hole path 96 is communicated with the 36a of fluid chamber by the opening portion 84 that is formed in its circumferencial direction middle body, and the opening at the place, two ends of the circumferencial direction by second groove 80 is communicated with the 36b of fluid chamber.Compare with low frequency hole path 94, high frequency hole path 96 has short path-length and bigger passage sections is amassed, because the ratio that path-length and passage sections are amassed is different, the tuned frequency of high frequency hole path 96 is the high frequencies of tuned frequency than low frequency hole path 94.
Under the suspension lining 74 with above-mentioned structure is installed in state in the vehicle, during the vibration in the input low-frequency range, the fluid that will produce between the 36a of fluid chamber, 36b by low frequency hole path 94 flows, and will be based on the mobilization performance effectiveness in vibration suppression of fluid.In addition, in the present embodiment, during low-frequency vibration, the deformation extent of movable film 92 will be restricted in input, thereby the fluid that prevents any essence by high frequency hole path 96 flows.
When importing the vibration of high-frequency range, the effect of the relative pressure oscillation of the 36a of fluid chamber, 36b will cause the resiliently deformable of movable film 92 energetically.Based on the resiliently deformable of movable film 92, will allow that the fluid by high frequency hole path 96 flows, and high frequency hole path 96 will be in the state of opening basically.Then, the positive fluid that will produce the high frequency hole path 96 of the vibration by being tuned to high-frequency range between the 36a of fluid chamber, 36b flows, and produces effectiveness in vibration suppression effectively based on the mobilization of fluid.Because the anti-resonance effect, being tuned to the low-frequency low frequency hole path 94 lower than the frequency of inputted vibration will be interdicted basically.
As mentioned above, the present invention goes for low frequency hole path 94 and high frequency hole path 96 is structures of the independent path that forms arranged side by side, by being arranged in from high frequency hole path 96, movable film 92 leads in the opening of at least one side the 36a of fluid chamber, the 36b effectiveness in vibration suppression of the excellence that can obtain to expect.
Figure 14 illustrates the pole 98 that is applicable to according to the suspension lining in the 3rd mode of execution of fluid-filled cylindrical vibration-damping device of the present invention.Except pole 98, substantially the same according to the structure of the suspension lining 10,74 of teaching in the structure of the suspension lining of present embodiment and above-mentioned first and second mode of executions, needn't describe here.
Particularly, similar with the pole 76 shown in above-mentioned second mode of execution, pole 98 comprises hole part 99.In hole part 99, be formed on the groove 100 of its outer circumferential face upper shed and extension predetermined distance.As shown in figure 14, groove 100 along the circumferential direction extends and turns back near its end; The length direction first end is positioned near the circumferencial direction first end at upper axial end portion place of hole part 99, and length direction the other end is in the circumferencial direction other end upper shed at the lower axial end portion place of hole part 99.The intercommunicating pore 102 that the inside all sides of radius vector are extended is formed on the length direction first end place of groove 100.
In the present embodiment, the width of the length direction intermediate portion of groove 100 changes, and the part of the bottom end of passing through groove 100 of along the circumferential direction extending is wide.In addition, be formed on opening portion 104 in the wide bottom end of groove 100 be arranged to connect in the middle opening portion of wall of all sides.Though describe in detail among the figure,, as in second mode of execution, arrange the movable film 92 of the opening of the interior all sides that cover opening portion 104 in interior all sides of opening portion 104, feasiblely act on the movable film 92 by the pressure of opening portion 104 with the 36b of fluid chamber.By movable film 92 is installed to the pole 98 that hole part 99 is made present embodiment.
As in the above-described 2nd embodiment, the pole 98 that will have above-mentioned structure is installed to the integrated vulcanizing profiled part 28 of primary elastomeric elastomer 16 and along the circumferential direction strides across bag opening of the 30a of shape portion, makes the suspension lining of constructing according to present embodiment by being fixed to integrated vulcanizing profiled part 28 from the outer barrel member 14 of external mounting.
In the suspension structure of present embodiment, make the outer circumferential face of outer barrel member 14 and pole 98 and put with the state of fluid-tight, feasible peripheral openings by outer barrel member 14 fluid-tight ground covering groove 100, thus formation is along the circumferential direction turned back and is extended the low frequency hole path 106 of specific length.This low frequency hole path 106 is communicated with the 36a of fluid chamber via intercommunicating pore 102 at first end, and the other end of this low frequency hole path 106 is communicated with the 36b of fluid chamber at the circumferencial direction end face of pole 98, and this low frequency hole path 106 is tuned to the effectiveness in vibration suppression to the vibration of the primary input in low-frequency range generation expection.
In suspension structure, as above-mentioned first and second mode of executions, when importing the vibration of low-frequency range or high-frequency range, can realize excellent effectiveness in vibration suppression according to the present embodiment structure.In addition, in the present embodiment, utilize the part of low frequency hole path 106 to form the structure of high frequency hole path 108, can form low frequency hole path 106 and high frequency hole path 108 with good space efficiency, and can make pole 98 compacter by employing.In addition, can form effectively and have the long-pending hole path 106,108 of regulation path-length and passage sections.
Provide the two the fact of effective effectiveness in vibration suppression of the vibration of the vibration of low-frequency range and high-frequency range by actual measured results explanation fluid-filled cylindrical vibration-damping device constructed according to the invention.
As object lesson according to the damping behavior of fluid-filled cylindrical vibration-damping device of the present invention, Figure 15 illustrates the damping behavior according to the suspension lining 10 of first mode of execution structure, describes with the diagram form of the numerical value of the frequency that indicates the relative inputted vibration of dynamic spring constant.According to this figure, utilize fluid-filled cylindrical vibration-damping device of the present invention, during the low-frequency vibration of input tens Hz degree, flow by the fluid by low frequency hole path and to produce effectiveness in vibration suppression (high effectiveness in vibration suppression) effectively, and during the dither of input 70Hz to 80Hz degree, being flowed by the fluid by high frequency hole path 72 produces effectiveness in vibration suppression (low dynamic Spring effect) effectively.Figure 15 also illustrates: during the vibration in the input mid frequency range, dynamic spring constant is retained as fractional value, and bring into play effectively to the vibration of wide frequency ranges based on the effectiveness in vibration suppression of the hydraulic pressure absorption of movable film 60 and obtain wider damping property.In Figure 15, represent as the measurement result shown in the embodiment with solid line, and dot the measurement result of the fluid-filled cylindrical vibration-damping device (fluid-filled cylindrical vibration-damping device that promptly lacks high frequency hole path) of the conventional construction that illustrates as a comparative example according to fluid-filled cylindrical vibration-damping device of the present invention.
Though above show the present invention with regard to some preferred implementation, these mode of executions only are exemplary and should be understood that never the present invention is limited to the concrete disclosure here.
For example, the movable film in above-mentioned first to the 3rd mode of execution is shown as and has the movable film structure that peripheral portion outside is fixed to pole; Yet, movable film with following movable platen structure also is an acceptable: this movable platen structure is designed to allow and produces micro-displacement on thickness direction, thereby produce the hydraulic pressure absorption displacement amount of limited thickness direction simultaneously by these micro-displacements, and under the state of maximum displacement, stop fluid to flow to the both sides of movable film.Under the situation that adopts this movable platen structure, movable platen not necessarily must be made by rubber elastomer, but can be instead made by for example hard resin etc.
In the above-described first embodiment, because the existence of narrow groove 66 causes the some parts of movable film 60 thinner, therefore, movable film 60 is easy to generate resiliently deformable when the input large-amplitude vibration; Yet, for example, when the input large-amplitude vibration, can make the seam opening by the resiliently deformable of movable film by in movable film, forming the seam that connects movable film along thickness direction.As object lesson, stitch by forming, but can produce the radially structure of middle body opening from a plurality of straight lines of the roughly radial extension of radially middle body of the movable film of circular plate shape.Utilize this design, the both sides of movable film can be arranged to be communicated with, when the input heavy shock loads, can prevent the formation of high spring constant, can also avoid the noise that causes by cavitation (cavitation) simultaneously by seam.Under static state, seam can be in the sealing state that the both sides of seam are in contact with one another, and perhaps can keep fluid by seam to be flowing in the opening of small degree that the damping behavior aspect can not produce any problem.
In the method that movable film 60,92 is installed to pole 38,76 shown in above-mentioned first to the 3rd mode of execution only is exemplary, and is not limited to any concrete mode.Especially, under the situation that pole is made by hard resin, preferably installation covers the fixed component of the opening of accommodating recess and movable film is remained in the containing space as means such as welding by utilizing.
In above-mentioned first to the 3rd mode of execution, the high frequency hole path 72,96,108 that is provided with as high frequency hole path is communicated with the 36a of fluid chamber, 36b at the two end part opening and at two end part.Yet, in another exemplary design, form other middle opening, with the ultra-high frequency hole path of the effectiveness in vibration suppression of the vibration of the high frequency of frequency that performance contrast high frequency hole path is provided at the length direction intermediate portion of high frequency hole path.By arranging the second movable film that is tuned to the frequency higher than the frequency of the movable film in the open part that is arranged in high frequency hole path at this middle opening, can when flowing, the fluid of guaranteeing the abundance by high frequency hole path obtain effectiveness in vibration suppression to the vibration of higher frequency.
Low frequency and high frequency hole path can have according to they desired damping behaviors and definite path-length, passage sections are long-pending etc., and the structure of low frequency and high frequency hole path is not limited to the concrete structure shown in above-mentioned first to the 3rd mode of execution.The structure of pole also is not limited to the structure shown in the above-mentioned mode of execution.
In above-mentioned first to the 3rd mode of execution, with the suspension lining as example according to fluid-filled cylindrical vibration-damping device of the present invention; Yet the present invention is applicable to the fluid-filled cylindrical vibration-damping device except that the suspension lining.
The invention is not restricted to the fluid-filled cylindrical vibration-damping device that vehicle uses, also be applicable to the fluid-filled cylindrical vibration-damping device that uses in train or other purposes.
In addition, should be appreciated that under the situation of the spirit and scope of the present invention that do not deviate from appended claims and limited, those skilled in the art can carry out various other modifications, modification and improvement to the present invention.
Cross reference
The full content of the Japanese patent application No.2008-030148 that comprises specification, accompanying drawing and summary that on February 12nd, 2008 submitted to is contained in this by reference.
Claims (8)
1. a fluid-filled cylindrical vibration-damping device (10,74), it comprises: intermediate cylinder member (22), its outer circumferential side around interior shaft component (12) arrange, by primary elastomeric elastomer (16) make described intermediate cylinder member (22) with described in shaft component (12) link; A pair of bag shape portion (30a, 30b), the radially both sides that it is arranged at described primary elastomeric elastomer (16) and is positioned at described shaft component (12), and respectively by being arranged on window portion (24a, 24b) in the described intermediate cylinder member (22) at the outer circumferential face opening; Outer barrel member (14), its overcoat also is fixed to described intermediate cylinder member (22) and goes up and cover this to bag shape portion (30a, 30b), thereby limits a fluid chamber (36a, 36b) of filling with incompressible fluid; And pole (38,76,98), its inner peripheral surface that is arranged to barrel member outside described (14) extend in a circumferential direction and be formed on described pole (38,76,98) and described outside the hole path (70,72,94,96,106,108) that along the circumferential direction extends between the barrel member (14), described fluid-filled cylindrical vibration-damping device (10,74) is characterised in that:
Constitute this bottom wall portion by described primary elastomeric elastomer (16) to the either party in the bag shape portion (30a, 30b), make along with the direction of axis normal pass described in shaft component (12) and described outside during barrel member (14) inputted vibration, in this fluid chamber (36a, 36b), produce energetically opposite just/negative pressure changes;
Described hole path (70,72,94,96,106,108) comprises low frequency hole path (70,94,106) that is tuned to low-frequency range and the high frequency hole path (72,96,108) that is tuned to high-frequency range;
Be provided with movable film (60,92) at least one side of described high frequency hole path (72,96,108) in leading to this fluid chamber (36a, 36b) the open part, this movable film (60,92) is suitable for coming the fluid of the described high frequency of restricted passage hole path (72,96,108) to flow based on its displacement and/or distortion.
2. fluid-filled cylindrical vibration-damping device according to claim 1 (10) is characterized in that, arranges described movable film (60) in each the open part that leads to this fluid chamber (36a, 36b) from described high frequency hole path (72).
3. fluid-filled cylindrical vibration-damping device according to claim 1 and 2 (10), it is characterized in that, the integrated vulcanizing profiled part (28) that forms by described primary elastomeric elastomer (16) shaft component (12) in described and described intermediate cylinder member (22) being linked together is provided with pair of holes halfbody (40a, 40b), this is to hole halfbody (40a, 40b) have respectively the semicircular cylinder shape and from this to the bag shape (30a of portion, 30b) this is assembled to hole halfbody (40a in the both sides of opposed longitudinal axis, 40b), make this to hole halfbody (40a, 40b) link this to the bag shape (30a of portion, opening 30b), thereby the described pole (38) of the qualification drum that the inner peripheral surface of barrel member (14) extends in a circumferential direction outside described; Cover on the outer circumferential face that is arranged on described pole (38) and the groove (42,44) that along the circumferential direction extends by described outer barrel member (14), to limit described low frequency hole path (70) and described high frequency hole path (72).
4. fluid-filled cylindrical vibration-damping device according to claim 1 and 2 (10), it is characterized in that, the length direction first end of described low frequency hole path (70) in this fluid chamber (36a, 36b) side's split shed and be communicated with this side in this fluid chamber (36a, 36b), and length direction the other end of described low frequency hole path (70) in this fluid chamber (36a, 36b) the opposing party's split shed and be communicated with this opposing party in this fluid chamber (36a, 36b); Length direction intermediate portion at described low frequency hole path (70) is formed with at this fluid chamber (36a, the first middle opening portion (58) of the side's split shed 36b) and at this fluid chamber (36a, the second middle opening portion (58) of the opposing party's split shed 36b), and in described first middle opening portion (58) and the described second middle opening portion (58), arrange described movable film (60) respectively, thereby utilize the described high frequency of the area limiting hole path (72) of extension between described first middle opening portion (58) in the intermediate portion of described low frequency hole path (70) and the described second middle opening portion (58).
5. fluid-filled cylindrical vibration-damping device according to claim 1 and 2 (10), it is characterized in that, the length direction first end of described low frequency hole path (70,106) in this fluid chamber (36a, 36b) side's split shed and be communicated with this side in this fluid chamber (36a, 36b), and length direction the other end of described low frequency hole path (70,106) in this fluid chamber (36a, 36b) the opposing party's split shed and be communicated with this opposing party in this fluid chamber (36a, 36b); Be formed with the middle opening portion (58,104) of the side's split shed in this fluid chamber (36a, 36b) at the length direction intermediate portion of described low frequency hole path (70,106), and in described middle opening portion (58,104), arrange described movable film (60,92), thereby utilize the part of described low frequency hole path (70,106) to limit described high frequency hole path (72,108).
6. fluid-filled cylindrical vibration-damping device according to claim 1 (74) is characterized in that, described low frequency hole path (94) and described high frequency hole path (96) are the independent paths that forms side by side; Be formed with the middle opening portion (84) of the side's split shed in this fluid chamber (36a, 36b) at the length direction intermediate portion of described high frequency hole path (96), and in described middle opening portion (84), arrange described movable film (92).
7. fluid-filled cylindrical vibration-damping device according to claim 1 and 2 (10), it is characterized in that, described movable film (60) has towards the center the radially middle body of attenuation gradually, makes two faces of described radially middle body of described movable film (60) be restricted to the plane of inclination of taper.
8. fluid-filled cylindrical vibration-damping device according to claim 7 (10), it is characterized in that, described movable film (60) has from radial center is sidelong the narrow groove (66) of penetrating the shape extension to periphery, and described movable film (60) is thin in other parts at the part ratio that forms described narrow groove (66).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008030148A JP5026999B2 (en) | 2008-02-12 | 2008-02-12 | Fluid filled cylindrical vibration isolator |
| JP2008-030148 | 2008-02-12 | ||
| JP2008030148 | 2008-02-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101509532A true CN101509532A (en) | 2009-08-19 |
| CN101509532B CN101509532B (en) | 2011-11-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100076175A Active CN101509532B (en) | 2008-02-12 | 2009-02-12 | Fluid-filled cylindrical vibration-damping device |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8128075B2 (en) |
| JP (1) | JP5026999B2 (en) |
| CN (1) | CN101509532B (en) |
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2009
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- 2009-02-12 CN CN2009100076175A patent/CN101509532B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| US8128075B2 (en) | 2012-03-06 |
| CN101509532B (en) | 2011-11-02 |
| JP2009191862A (en) | 2009-08-27 |
| US20090200719A1 (en) | 2009-08-13 |
| JP5026999B2 (en) | 2012-09-19 |
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